The present invention relates to flame-retardant moulding compositions comprising glass fibre and siloxane-containing polycarbonate block cocondensate, and also to a process for the production of these moulding compositions. The invention further relates to the use of these flame-retardant moulding compositions in injection-moulding and extrusion applications.

A resin composition that is transparent and excellent in weather resistance and heat resistance, and a molded article thereof are provided. According to the present invention, a transparent and highly heat-resistant resin composition, comprising: an aromatic vinyl-(meth) acrylic acid ester-unsaturated dicarboxylic acid anhydride copolymer (A); and an ultraviolet absorbing agent (B); wherein an amount of a residual unsaturated dicarboxylic acid anhydride monomer contained in the copolymer (A) is 100 ppm or less, and a content of the ultraviolet absorbing agent (B) with respect to a total amount of (A) and (B) is 0.03 to 1.0 mass %, is provided. The composition may further comprise a methacrylic resin (C) in addition to (A) and (B).

The disclosure provides a low-density PVC plastics flooring and a preparation method thereof, which belongs to the technical field of films for floor. The disclosure provides a low-density PVC plastics flooring, which is prepared from components including, in parts by mass, 100 parts of PVC, 300-380 parts of calcium carbonate, 7-12 parts of a stabilizer, 2-8 parts of processing aid ACR, 12-16 parts of a foaming regulator, 0.1-0.5 parts of a foaming agent, 2-4 parts of G60 lubricant, and 2-4 parts of PE wax. In the disclosure, the density of the PVC plastics flooring is reduced to 1.4-1.6 g/cm.sup.3 even increasing the amount of calcium carbon, thereby greatly reducing the production cost and improving the economic efficiency.

A rubber composition manufacturing method comprises: an operation in which at least amine antioxidant, zinc oxide, silane coupling agent, silica, and rubber comprising modified polymer are fed into an internal kneader; and an operation in which kneading is carried out at the internal kneader while kneading temperature is controlled so as to suppress occurrence of a coupling reaction between the silica and the silane coupling agent, and so as to suppress occurrence of a bonding reaction between the silica and the modified polymer.

A rubber composition for a cover layer of a hydraulic hose includes: ethylene vinyl acetate copolymer (EVA); and ethylene-propylene-diene terpolymer (EPDM). In an embodiment, the composition includes ethylene vinyl acetate copolymer (EVA) and ethylene-propylene-diene terpolymer (EPDM) and additives. The additives may include carbon black with a content of around 15 phr, silica with a content of around 20 phr, di-octyl adipate with a content of around 18 phr, aluminium hydroxide with a content of around 124 phr, magnesium hydroxide with a content of around 30 phr, and other chemicals with a content of around 20 phr. The other chemicals may include zinc oxide, peroxide curative, antioxidant, coagents and processing aids.

A epoxy resin composition includes a given epoxy resin [A], an aromatic amine compound [B], an organic acid hydrazide compound [C] having a structural formula represented by general formula (I) or (II) (X is a structure selected from among monocyclic and polycyclic aromatic ring structures, polycyclic aromatic ring structures, and aromatic heterocyclic structures and optionally has, as a substituent, any of C.sub.4 or lower alkyl groups, a hydroxy group, and an amino group), and a thermoplastic resin [D], wherein the amount of the constituent element [C] is 1-25 parts by mass per 100 parts by mass of the constituent element [A], the epoxy resin composition, after having been held at 80° C. for 2 hours, having a viscosity which is up to 2.0 times the initial viscosity at 80° C.

##STR00001##

An object of the present invention is to provide a golf ball having excellent color development stability. The present invention provides a golf ball comprising a core and a cover covering the core, wherein the cover is formed from a resin composition containing a first base resin and a fluorescent pigment, and the fluorescent pigment has a number-based cumulative median size of 2.5 μm or more.

Methods may include methods of producing polyester resin composition and methods of producing a polyester resin formed article that make it possible to improve thermal resistance, and to provide the polyester resin composition and the polyester resin formed article. Methods of producing a polyester resin composition may include: a step (I-a) of obtaining a polylactic acid composition (X) containing a polylactic acid (A), pentaerythritol (C), and a silicate (D); and a step (II-a) of mixing the polylactic acid composition (X) with a poly(3-hydroxyalkanoate) (B).

The present invention relates to novel block copolymers comprising at least one mono vinyl aromatic monomer (also referred to as mono vinylarene) and at least one conjugated diene monomer, in particular to styrene butadiene block copolymers (SBC), with a defined block structure. The invention further relates to polymer blends which comprise at least one block copolymer and at least one mono vinylarene acrylate copolymer, in particular a styrene-methyl methacrylate copolymer. Related methods for preparation and articles prepared from the polymer blends are also provided.

A polyamide composition comprising from 25 wt % to 90 wt % of a first polyamide comprising a non-aromatic polyamide formed from 50 wt % to 90 wt % PA66; from 10-50 wt % of a second polyamide comprising a polyamide copolymer; from 0.01-10 wt % of a first stabilizer comprising a lanthanoid-based compound; from 0.01-10 wt % of a second stabilizer comprising a copper-based compound; and from 0-65 wt % filler.